Rudolf nadeniczek



(No Model.) 2 Sheath-Sheet 2 R. NADBNIGZEK.

ROTARY ENGINE. No. 518,327. Patented Apr. 17 1894.

WITNESSES. 7g INVENTOH ,w i BY% A TTOHNE Y5 5, a. Jwtt. I

UNITED- STATES PATENT RUDOLE NADENICZEK, OF BUDA-PESTH, AUSTRIA-HUNGARY.

ROTARY ENGINE.

SPECIFICATION forming part of Letters Patent No. 518,327, dated A ril17, 1894. Application filedllovemher 10,1893. Serial No. 490,560. (Nomore.)

To all whom it may concernf Be it known that I, RUDOLF NADENIOZEK, clerkin an office at No. 69 Praterstrasse, Buda- Pesth, Austria-Hungary, anda subjectof the Emperor of Austria-Hungary, have invented certain newand useful Improvements in R0- tary Engines, of which the following is aspecification.

This invention relates to that class of rotary engines, in which apiston plate is made to rotate within a cylinder. This plate is eitherdriven round bysteam admitted to the cylinder, transmitting its motionto another driving medium, for instance, a shaft; or inversely, theplate is driven round froma driving shaft, 850., and used as a suctionpump for air or water. In each case the piston plate must have asuitable guide in the interior of the cylinder, and further the inletand outlet ports of the cylinder must be open ed'and shut in a suitablemanner. For these two motions, I employa single device, namely, a secondcylinder in the interior of the outer cylinder containing thepiston-plate.

In order to make this invention more fully intelligible, reference ishad to the accompanying drawings,in' which like letters are used todenote like parts throughout the several figures.

Figure l is a cross-section of the engine employed as a steam engine.Fig. 2 is a longitudinal section of the same.v Fig.3 is a crosssectionshowing the position of. the pistonplate by entrance and by expansion ofsteam. Fig. 4 is a cross-section of the engine arranged as asuction-pump; Fig. 5 is a crossseotionthrough cylinders o and Figs. 6, 7and 8 are enlarged details. I

The new rotary engine which can be employed as a steam engine withexpansion of steam, or asa suction pump, is provided with the littlecylinder B so seated in the outer cylinder A that it rests on the samebetween the inlet and outlet ports a and b, and in the case where themachine is employed as a steam engine, the cylinder B covers the inletport a and consequently bears eccentrically in the interiorof the largercylinderA, Fig. 3. The working space A between the two cylinders,sickle-shaped in cross-section, is inclosed at the sides by the two lidsc c, which form "the flanges of two further cylinders c c, Fig. 2. Intothese cylinders c the ends d d of the inner cylinder B protrude, and liewith their outer surfaces against theinner surfaces of said cylinders.The cylinder ends d 01 pass through the cylinders o' o and, di-

minished in cross-section, are laid in bearings d v The driving shaft 6of the machine lies in the longitudinal axis of thelarger cylinderA andpasses through the inner cylinder B. It is laid in bearings in asuitable manner outside the cylinders and carries the piston-platefattached to it by means of a coupling ve, said plate passing through aslit in cylinder B into the working space and filling up the wholebreadth of the same from one lid 0 to the other, being made to fit steamor water tight against the same.

The machine as above described, can be used in combination with anotherof a similar nature, the two plates f being set at an' angle of onehundred and eighty degrees to each other and arranged on one shaft e.

The engine Works as follows: The piston f of each working-chamber takesup its first position I, when it is slightly in front of the port a,through which steam enters, Fig. 3. The steam presses the piston roundand when at full steam, it is in position II. During this period ofmotion, an excision g on the surface of the cylinder B, which otherwisecloses the ports a, passes over the said port, and'permite the entranceof steam behind the pistonplate f. Excision g is divided up by one ormore bridge-pieces g, so that the steam can not pass over direct frominlet porta to outlet port 12; the excision 9 being longer than I .11into position III. From this point the one piston is taken again intoposition I by the other piston on the common shaft e, and

which is now under steam pressure. The steam passes out at port 12.

In order that the machine can act as a suction pump, both the inlet andoutlet ports a and b are arranged near the place where the cylinder Brests part of its surface on the inner surface of cylinder A, Fig. t.The inlet port therefore, in this instance, also remains uncovered.Excision g on the surface of cylinder B is here unnecessary. For theremainder, the arrangement of the machine as a suction-pump isessentially the same as when acting as a steam motor. The shaft 6 ishowever rotated by some external driving p0wer,the medium to be pumpedbeing sucked in through port a behind the piston plate f into theworking chamber A, and pressed out atb in front of the plate. As thepiston plate, which passes through the walls of the inner cylinder, doesnot rotate round the axis of rotation of the same, but round the axis ofrotation of the larger cylinder A, it will, in rotating, continuallyalter its position in the slit of cylinder B. For this purpose, the slitin cylinder B is provided with loosely mountedbearin gs h, through whichthe piston-plate passes. The bearings turn corresponding to thepositions of the piston-plate in the slit.

In order that the cylinder B fits well against the lids c circulargrooves are made in said lids" opposite the outer edge of cylinder B, inwhich grooves steel rings 2' are placed, pressing against cylinder Bunder the influence of helical springs 76, Fig. 2. Similarly, betweencylinders d and 0' steel rings 1 are placed, Fig. 2.

In order that the inner cylinder B should not bear too heavily on thebearings d inclosing its ends d, and also on the lower innersurfaceofcylinder A, from the great pressure of steam in theWorking-chamber A, steam tubes m are arranged in the inner cylinder,which connect the working-chamber A with narrow circular chambers'n.which lie between the cylinders d and 0', Figs. 1 and 2. The steamentering these chambers presses against theinner cylinder with the samepressure and always in a contrary direction to the pressure, in theworking-chamber A. In order to make the surfaces of the cylinders A andB steam-tight, packing-rods 0 are set in the surface of the largercylinder, Figs. 1 and 3. The motion of the piston-plate f is assisted bylateral rods 1" acting as pistons. These lie in slits in the outersurface of the cylinder d, Fig. 5. In order that each rod 0 may lietightly against the inner surface of the cylinder end 0' a steel halfring if is sprung in between each piston r and a sliding-cheek slikewise set in cylinder at and opposite to r. This spring half ringthas sufficient force to press piston 'r and cheek s continually againstthe walls of the cylinder 0'.

When the machine is acting as a steam engine, fresh steam is admittedinto the narrow sickle-shaped space at between 0 and d pushing therodpiston r with the cylinder d round, the steam being admitted throughpipe p which at one end opens into the inlet port (1, passes through themantle of the cylinder 0' and at the other end opens out into the spacebetween 0 and (Z, Fig. 5. The live steam entering the space n acts inconjunction with the steam admitted through the tubes m to equalize thepressure and prevent friction in the bearings, the tubes m beingsupplemental means so as to connect said spaces directly with the steamchamber A.

i If the machine is acting as a suction-pump, then the medium is "suckedinto the space it behind the piston '1', while the cylinder at wlth therod-piston r is rotated from the exterior The steam, &c., passes. outagain througha tube g, which opens into the outlet port b. In a similarmanner as the inlet and outlet ports a and b of the working chamber Aare separated by the part of the surface of. the oyl? inder B resting oncylinder A, the inletand outlet ports of each space it are separated bythe parts of the cylinder 61 d of cylinder B resting on the innersurfaces of the cylinders c c. The contact surfaces of the parts (1 (1lie in a contrary sense to those of the cylinder B. Further when twomachines are connected to work together, the pistons r r of the one machine can be placed at an angle of one hundred and eighty degrees to thepistons of the other, similarly to the piston-plates f, so that the onepair is assisted over from the outlet opening of tube q to theinletopening of tube 19, by the other pair, when these latter are under steampressure. Piston r is composed, as can be seen from Fig. .6 of the threeparts 1" r W, of which the two combined parts WW, I

8, and is provided on the outside with small fiutings, through which thesteam led in by tube 19 can pass behind the pistons 7'.

Having fully described and ascertained the nature of this invention,what I claim, and desire to secure by Letters Patent, is-

1. In combination in a rotary engine, the main cylinder, the reducedlateral cylinder extension 61, the rotary part in the main cylinderhaving the piston plate, the reduced lateral extension on said pistonportion fitting within the lateral cylinder extension, with contractedintervening spaces n and the steam supply pipes leading to said spaces,substantially as described.

2. In combination in a rotary engine, the main cylinder the reducedlateral cylinder extension d, the rotary part in the main cylinderhaving the piston plate, the reduced lateral extension on said pistonportion fitting within the lateral cylinder extension, with thecontracted intervening spaces 'n, and the chamberA' to the contractedspace 11- between rod piston in said spaces, substantially as dethereduced cylinder and piston plates subto scribed. stantially asdescribed.

3. In combination, the main cylinder, the rotary piston therein, thereduced lateral cyl- RUDOLF NADENIOZEK' inder and piston portions, thepiston plate Witnesses: forming a working chamber A for the live WILLIAMMARIASSY, steam and the pipe on extending from the GERSTERGRGN.

